This change removes the three separate mutexes which used to lock an
account's wallet, tx store, and utxo store. Accounts no longer
contain any locking mechanism and rely on go's other synchronization
constructs (goroutines and channels) for correct access.
All accounts are now managed as a collection through the new
AccountManager, rather than the old AccountStore. AccountManager runs
as its own goroutine to provide access to accounts.
RPC requests are now queued for handling, being denied if the queue
buffer is exhausted. Notifications are also queued (instead of being
sent from their own goroutine after being received, in which order is
undefined), however, notifications are never dropped and will
potentially grow a queue of infinite size if unhandled.
Fixes several hangs cased by incorrect locking, by removing the
locking. Instead, a single goroutine manages all file writes.
The old account 'dirty' boolean flags have been removed. Instead,
anytime an account structure is modified, the portion that was
modified (wallet, tx store, or utxo store) must be scheduled to be
written.
Now that it has been decided that all account wallets will share the
same passphrase, the walletlock and walletpassphrase RPC handlers now
go through the accountstore to lock or unlock all account wallets,
rather than only changing the default account.
This change allows for the use of watching-only wallets. Unlike
normal, "hot" wallets, watching-only wallets do not contain any
private keys, and can be used in situations where you want to keep one
wallet online to create new receiving addresses and watch for received
transactions, while keeping the hot wallet offline (possibly on an
air-gapped computer).
Two (websocket) extension RPC calls have been added:
First, exportwatchingwallet, which will export the current hot wallet
to a watching-only wallet, saving either to disk or returning the
base64-encoded wallet files to the caller.
Second, recoveraddresses, which is used to recover the next n
addresses from the address chain. This is used to "sync" a watching
wallet with the hot wallet, or vice versa.
This change greatly cleans up the RPC connection between btcwallet and
btcd. Proper (JSON-RPC spec-following) notifications are now expected
rather than Responses with a non-empty IDs.
A new RPCConn interface type has also been introduced with a
BtcdRPCConn concrete type for btcd RPC connections. Non-btcd-specific
code handles the RPCConn, while the btcd details have been abstracted
away to a handful of functions. This will make it easier to write
tests by creating a new fake RPC connection with hardcoded expected
replies.
This change adds a new websocket extension command,
listalltransaction, which works just like listtransactions except it
does not take the count or from optional args, and will return an
array of all transaction details. Notifications for newly-added
transactions are now sent to frontends as well, using the newtx
notification.
No support for updating tx details or removing failed txs is
implemented yet, and will be when cleanly failing a tx send is
implemented later.
This change better organizes account handling by creating a new
AccountStore type and accountstore global variable, with receiver
funcs for all operations that require all accounts. More Account
funcs are also added to clean up account handling in the RPC code.
Intial work on this done by dhill.
This change adds support for the listtransactions RPC command. To
properly reply to this command, additonal information about received
transactions was added, and is now saved in an account's tx.bin file.
Additionally, when sending a transaction, a *tx.SendTx is now saved to
the Tx store, and is included in listtransactions replies under the
"send" category.
WARNING: All account's tx.bin and utxo.bin files should be removed
before running with this change, or else the files may not be read
correctly. Removing tx.bin is not an issue as it was not being used
before, and was being saved with incorrect data. Removing utxo.bin is
not an issue as it will just trigger a rescan on next start. File
format versions are now included in both files, so automatic updates
from previous file formats will be possible with future changes.
Fixes#12.
This fixes the cases for the walletlock and walletpassphase requests
to return an appropiate error to the frontend when the default account
does not exist.
This adds the necessary bits for handling importing addresses for the
wallet file format, as well as implementing the importprivkey and
dumpprivkey RPC requests.
Initial code by dhill.
With the exception of the createencryptedwallet extension (which is
required to make a wallet), all websocket-specific handlers are now
only available from a websocket connection, and standard RPC requests
are handled with a normal HTTP request and reply.
As an added bonus, listening on IPv6 now works.
This change modifies the order in which transaction to watched
addresses are processed and when frontend notifications occur. Due to
btcd notifying all transactions before sending the blockconnected
notification, the UTXO and transaction stores can be modified without
sending any frontend notifications, and then a single frontend
notification is sent when the blockconnected notification arrives.
The order in which each file is synced to disk was also changed to
write out the UTXO and transaction stores before writing the wallet.
This is to prevent a race where wallet closes after writing the dirty
wallet, but before the dirty UTXO store is written. In this
situation, newly added UTXOs will be missed and not found again on the
next wallet open during the rescan. Writing the wallet (which holds
the synced-to-block information) last prevents this.
An issue where the unconfirmed change UTXO created from a new
transaction never being properly notified to frontends is fixed now as
well.
This change moves the handlers to a map (instead of falling through a
switch statement), and updates each handler to use a btcjson.Cmd
instead of passing parameters in a btcjson.Message manually.
Plenty of comments were also added, which should also make the code
much more understandable.
This removes the enforced check for the spent field for tx-to-me
notifications, as this is no longer sent, and should be calculated by
wallet (not done yet). Additionally, the full CreatedTx information
is saved with the unmined tx map, so when a tx is mined, information
about which inputs and ouputs it creates that are relevant to the
wallet can be used.
When a wallet is opened, a rescan request will be sent to btcd with
all active addresses from the wallet, to rescan from the last synced
block (now saved to the wallet file) and the current best block.
As multi-account support is further explored, rescan requests should
be batched together to send a single request for all addresses from
all wallets.
This change introduces several changes to the wallet, tx, and utxo
files. Wallet files are still compatible, however, a rescan will try
to start at the genesis block since no correct "last synced to" or
"created at block X" was saved. The tx and utxo files, however, are
not compatible and should be deleted (or an error will occur on read).
If any errors occur opening the utxo file, a rescan will start
beginning at the creation block saved in the wallet.
